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Title: Application of positron annihilation lineshape analysis to fatigue damage and thermal embrittlement for nuclear plant materials

Abstract

Positron annihilation (PA) lineshape analysis is sensitive to detect microstructural defects such as vacancies and dislocations. The authors are developing a portable system and applying this technique to nuclear power plant material evaluations; fatigue damage in type 316 stainless steel and SA508 low alloy steel, and thermal embrittlement in duplex stainless steel. The PA technique was found to be sensitive in the early fatigue life (up to 10%), but showed a little sensitivity for later stages of the fatigue life in both type 316 stainless steel and SA508 ferritic steel. Type 316 steel showed a higher PA sensitivity than SA508 since the initial SA508 microstructure already contained a high dislocation density in the as-received state. The PA parameter increased as a fraction of aging time in CF8M samples aged at 350 C and 400 C, but didn`t change much in CF8 samples.

Authors:
; ;  [1];  [2]
  1. Ishikawajima-Harima Heavy Industries Co., Ltd., Tokyo (Japan)
  2. Ishikawajima-Harima Heavy Industries Co., Ltd., Kanagawa (Japan)
Publication Date:
OSTI Identifier:
86153
Report Number(s):
CONF-9505104-
ISBN 0-87170-548-6; TRN: 95:017441
Resource Type:
Book
Resource Relation:
Conference: 13. international conference on nondestructive evaluation in the nuclear and pressure vessel industries, Kyoto (Japan), 22-25 May 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the 13. international conference on NDE in the nuclear and pressure vessel industries; Iida, Kunihiro [ed.] [Shibaura Inst. of Technology, Tokyo (Japan)]; Light, G.M [ed.] [Southwest Research Inst., San Antonio, TX (United States)]; Whittle, M.J. [ed.] [John Whittle and Associates, Cheshire (United Kingdom)]; PB: 503 p.
Country of Publication:
United States
Language:
English
Subject:
22 NUCLEAR REACTOR TECHNOLOGY; 36 MATERIALS SCIENCE; NUCLEAR POWER PLANTS; REACTOR MATERIALS; STAINLESS STEEL-316; FATIGUE; STAINLESS STEELS; EMBRITTLEMENT; NONDESTRUCTIVE TESTING; CRYSTAL DEFECTS; EXPERIMENTAL DATA

Citation Formats

Uchida, M., Ohta, Y., Nakamura, N., and Yoshida, K. Application of positron annihilation lineshape analysis to fatigue damage and thermal embrittlement for nuclear plant materials. United States: N. p., 1995. Web.
Uchida, M., Ohta, Y., Nakamura, N., & Yoshida, K. Application of positron annihilation lineshape analysis to fatigue damage and thermal embrittlement for nuclear plant materials. United States.
Uchida, M., Ohta, Y., Nakamura, N., and Yoshida, K. Tue . "Application of positron annihilation lineshape analysis to fatigue damage and thermal embrittlement for nuclear plant materials". United States.
@article{osti_86153,
title = {Application of positron annihilation lineshape analysis to fatigue damage and thermal embrittlement for nuclear plant materials},
author = {Uchida, M. and Ohta, Y. and Nakamura, N. and Yoshida, K.},
abstractNote = {Positron annihilation (PA) lineshape analysis is sensitive to detect microstructural defects such as vacancies and dislocations. The authors are developing a portable system and applying this technique to nuclear power plant material evaluations; fatigue damage in type 316 stainless steel and SA508 low alloy steel, and thermal embrittlement in duplex stainless steel. The PA technique was found to be sensitive in the early fatigue life (up to 10%), but showed a little sensitivity for later stages of the fatigue life in both type 316 stainless steel and SA508 ferritic steel. Type 316 steel showed a higher PA sensitivity than SA508 since the initial SA508 microstructure already contained a high dislocation density in the as-received state. The PA parameter increased as a fraction of aging time in CF8M samples aged at 350 C and 400 C, but didn`t change much in CF8 samples.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 1995},
month = {Tue Aug 01 00:00:00 EDT 1995}
}

Book:
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